Various applications has allowed the development of different H2 storage scenario. Recently, the Hy-Can[4] consortium has introduced a small one liter, 10 bars (1.0 MPa; 150 psi) format. Horizon Fuel Cells is now selling a refillable 3 megapascals (30 bar; 440 psi) metal hydride form factor for consumer use called HydroStik.[5]

Burst test: the pressure at which the tank bursts, typically more than 2x the working pressure.

Proof pressure: the pressure at which the test will be executed, typically above the working pressure.

Leak test or permeation test,[9] in NmL/hr/L (Normal liter of H2/time in hr/volume of the tank.

Fatigue test, typically several thousand cycles of charging/emptying.

Bonfire test where the tank is exposed to an open fire.

Bullet test where real bullets are fired at the tank.

Actual Standard EC 79/2009

U.S Department of Energy maintains a hydrogen safety best practices site with a lot of information about tanks and piping.[10] They dryly observe "Hydrogen is a very small molecule with low viscosity, and therefore prone to leakage.".[11]

Using Magnesium[12] for hydrogen storage, a safe but weighty reversible storage technology. Typically the pressure requirement are limited to 10 bars (1.0 MPa; 150 psi). The charging process generates heat whereas the discharge process will require some heat to release the H2 contained in the storage material. To activate those type of hydrides, you need to reach at least 300 °C (572 °F). [13]